package com.smh.multipeType;

/**
 * @description: B的父类
 * @author: shenmhk
 * @create: 2020-10-23 14:58
 */
public class A {

    public String show(D obj){
        return "A and D";
    }
    public String show(A obj){
        return "A and A";
    }
}
